MULTI-CARD SYNCHRONIZATION SYSTEM OF FUNDAMENTAL AND DIVIDED CLOCK FREQUENCIES
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United States of America Patent
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Issued Date -
Oct 20, 2016
app pub date -
Apr 17, 2015
filing date -
Apr 17, 2015
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Abstract
Provided is a multi-card synchronization system for synchronizing fundamental and divided clock frequencies. The system includes a plurality of cards connected with a chassis, each card comprising one or more clocks to be synchronized, and one of the plurality of cards being a master card. The master card transmits a reference clock signal to each card including the master card, locks a phase of each card upon receiving the reference clock signal transmitted thereto, transmits a first phase-locked-loop (PLL) program signal to each card, and syncs the fundamental and divided clock frequencies of each card including the master card.
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